noun
/plæˈtoʊ/ , pl plateaus also plateaux /plæˈtoʊz/
[count] a large flat area of land that is higher than other areas of land that surround it
see color picture
a period when something does not increase or advance any further
verb
-teaus; -teaued; -teauing
[no obj] :to stop growing or increasing :to reach a plateau